Interfuse (H) U3 100mm Solid Interlyte Ultra 3.6N (90 Per Pack )

The Interlyte Ultra 100mm 3.6N masonry block is a lightweight, high-performance construction unit designed to deliver easy handling, reliable strength, and good thermal performance. Manufactured from a blend of lightweight aggregates and cement, these blocks weigh significantly less than traditional concrete units but still provide consistent structural performance and a textured surface that’s ideal for plastering, rendering, or dry-lining. (interfuseblocks.com)

This block is perfect for builders and contractors looking for a practical masonry solution that combines workability with dependable quality — making it suitable for internal partitions, cavity wall construction, and general blockwork where ease of handling and strong performance are priorities. (interfuseblocks.com)

Key Features & Benefits

• 3.6 N/mm² compressive strength suitable for general purpose blockwork

• 100 mm width ideal for internal walls, partitions, and cavity wall inner leaves

• Ultra-lightweight design makes lifting and laying easier on site

• Textured face finish provides a reliable key for plaster, render, or dry-lining

• Euroclass A1 fire resistance gives non-combustible performance

• High insulation performance aids improved thermal efficiency

• Manufactured to BS EN 771-3 and associated standards for quality and compliance

Typical Applications

• Internal and separating walls (non-loadbearing & light loadbearing)

• Inner leaves of cavity wall systems with insulation

• Outer leaves of cavity walls when combined with suitable insulation

• Infill units in beam and block floor systems

• Fire-resistant walling assemblies

Technical Specification

• Product: Interlyte Ultra Masonry Units

• Configuration: Solid block with textured face

• Dimensions (Face Work Size): 440 × 215 × 100 mm

• Material: Lightweight aggregate & cement

• Strength: 3.6 N/mm²

• Density: Approx. ~850 kg/m³

• Thermal Performance: Low conductivity for good insulation

• Fire Performance: Euroclass A1 (Non-combustible)

• Finish: Textured — excellent for plaster or render key

• Pack Size: 90 blocks

• Standards: BS EN 771-3 compliant

• Typical Unit Weight: <20 kg for easier handling

Why Buy From Us

We supply trusted masonry solutions that balance performance and practicality on site. The Interlyte Ultra 100mm 3.6N lightweight blocks offer easy handling, reliable strength, and solid thermal properties, helping you deliver efficient walling with reduced labour effort and consistent results.